A 30' Outlaw can plane at 19 mph? WoW! That's pretty damn good. I bet the test was done on salt water where the water is heavier and the boat can get on plane easier. Also prop slip is less in salt water.
I have a difficult time getting on plane at 25! As a property owner this is not good and I have stressed many times, 25 at night will cause a lot of shore erosion. But the SL crowd simply don't care about anything but their own agenda!